Compared with sulfuric acid process, under the premise of ensuring pure benzene quality, the pollution of tar acid and waste water contained with acid on environment can be eliminated.

We develop the new process and apply to produce. This has achieved the goal of recovery and utilization of acid tar and pollution control.

The surrounding area of the coke oven, the raw coal gas purification workshop and the coal tar and crude benzene processing workshop would be the most serious pollution area of the coking plant.